<div dir="ltr"><div class="gmail_quote"><div dir="ltr">pon, 2. lis 2017. u 14:49 Ilya Zverev <<a href="mailto:ilya@zverev.info">ilya@zverev.info</a>> napisao je:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Exactly. OSM uses the reversed notation:<br>
<br>
ref:velobike is a ref for velobike, not velobike for ref.<br>
source:geometry is a source for geometry, not geometry for source.<br>
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Wikipedia for brand should also be wikipedia:brand. This way all wikipedia links are grouped.<br>
<br></blockquote><div><br></div><div>Your examples are the minority here. Most often before the colon is the subject, and after the colon is its attribute. Just go to this link to see most uses of the colon:</div><div><br></div><div><a href="https://taginfo.openstreetmap.org/search?q=%3A">https://taginfo.openstreetmap.org/search?q=%3A</a></div><div><br></div><div></div><div>addr:housenumber=3, house number is an attribute (or a part) of the whole address</div><div>source:date=2017-07-07, date is an attribute of the source tag. It is not the source of the date provided.<br></div><div>building:levels=4, number of levels is an attribute of the building<br></div><div><div></div><div>social_facility:for=seniors, who is the social facility for is an attribute of the social facility<br></div><div></div><div>church:type=parish, type of the church is an attribute of the church</div><div></div>
</div><div></div><div></div><br><div>On the entire first page there are only two tags that use colons as you said; ref<b>:</b>bag<font color="rgb(28, 58, 169)"> on place #10</font>
and ref<b>:</b>ruian<b>:</b>building on place #34.<font color="rgb(28, 58, 169)"> </font>
</div><div><br></div><div>That's why, when I created the original Wikidata proposal, I suggested brand:wikidata. Because Wikidata ID is an attribute of the brand.</div><div><br></div><div>Janko<br></div></div></div>